JPH01296884A - Video telephone set - Google Patents

Video telephone set

Info

Publication number
JPH01296884A
JPH01296884A JP12730288A JP12730288A JPH01296884A JP H01296884 A JPH01296884 A JP H01296884A JP 12730288 A JP12730288 A JP 12730288A JP 12730288 A JP12730288 A JP 12730288A JP H01296884 A JPH01296884 A JP H01296884A
Authority
JP
Japan
Prior art keywords
video
circuit
signal
crt
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12730288A
Other languages
Japanese (ja)
Inventor
Kenji Ueda
賢二 上田
Toshiro Akiyama
秋山 俊郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12730288A priority Critical patent/JPH01296884A/en
Publication of JPH01296884A publication Critical patent/JPH01296884A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To use the title telephone set with a daily using sense by selectively invert the horizontal sweep of a CRT with the output of a picture selector circuit, and laterally inverting the image of a sending person himself, and displaying it as a mirror image on a CRT monitor. CONSTITUTION:The video signal of a transmitting person 2 photographed by a video camera 1 is sent to a distributing circuit 3, outputted to another side as a video output signal 6, either one of a video input signal 4 sent from the other side or the image of the transmitting person himself is selected by the distributing circuit 3, and inputted to the CRT monitor. The selection of the distributing circuit 3 is executed by a switching signal from a switching signal generating circuit 5. A CRT monitor 20 sends the inputted video signal through a video signal processing circuit 21 to a driving circuit 22. Next, a horizontal sweeping inverting circuit 23 discriminates invertion or non-invertion, suitably inverts only the horizontal sweeping signal out of the respective types of the driving signals according to the output condition of the switching signal generating circuit, sends the other signals to a CRT 24 as they are, and operates the CRT 24.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、相互に映像及び音声を伝達し合うことがで
きるテレビ電話装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video telephone device that can mutually transmit video and audio.

[従来の技術] 近時、相互の情報伝達手段として、音声を伝達するだけ
でなく、互いに自身の映像を相手側に送信しまた相手側
から送信してくる映像信号を受信する機能を備えたテレ
ビ電話装置の重要性がますます高まっている。
[Prior Art] Recently, as means of mutual information transmission, devices have been developed that not only transmit audio but also have the ability to transmit their own images to the other party and receive video signals sent from the other party. Videophone devices are becoming increasingly important.

第3図はこのようなテレビ電話装置の映像信号部の一例
を示すブロック図であり、(1)はビデオ・カメラ、(
2)は被写体である送信者である。
FIG. 3 is a block diagram showing an example of the video signal section of such a video telephone device, in which (1) is a video camera;
2) is the sender who is the subject.

ビデオ・カメラ(1)からの出力は分配器(3)に接続
され、該分配回路(3)には史にビデオ信号(4)と、
前記二つの入力信号のいずれをとるかの選択を行うため
の切替信号を発生する切替信号発生回路(5)が接続さ
れている。分配回路(3)の二つの分配出力のうちの一
つはビデオ出力信号(6)として通信の相手側に通じる
伝送路に接続され、他方の出力はCRTモニタ(7)に
接続されている。CRTモニタ(7)は、ビデオ信号処
理回路(8)、駆動回路(9) 、CRT(10)によ
り構成されている。
The output from the video camera (1) is connected to a distributor (3), which distributes the video signal (4) and
A switching signal generating circuit (5) is connected to generate a switching signal for selecting which of the two input signals to take. One of the two distribution outputs of the distribution circuit (3) is connected as a video output signal (6) to a transmission line leading to the communication partner, and the other output is connected to a CRT monitor (7). The CRT monitor (7) is composed of a video signal processing circuit (8), a drive circuit (9), and a CRT (10).

次に動作について説明する。ビデオ・カメラ(1)によ
って撮像された送信者(2)の映像信号は、分配回路(
3)を経由して相手側にビデオ出力信号(6)として送
信される。また、分配回路(3)は切替信号発生回路(
5)で作成された切替信号により、ビデオ・カメラで撮
影された送信者(2)の映像信号と、相手側より送られ
てきたビデオ人力信号(4)のいずれか一方を選択し、
CRTモニタ(7)に送る。CRTモニタ(2)は、前
記選択人力された信号をビデオ信号処理回路(8)を介
して駆動回路(9)に送り、CRT(10)を駆動して
映像を表示する。
Next, the operation will be explained. The video signal of the sender (2) captured by the video camera (1) is transmitted to the distribution circuit (
3) to the other party as a video output signal (6). The distribution circuit (3) also includes a switching signal generation circuit (
Using the switching signal created in step 5), select either the video signal of the sender (2) captured by the video camera or the video human input signal (4) sent from the other party,
Send to CRT monitor (7). The CRT monitor (2) sends the selected signal to the drive circuit (9) via the video signal processing circuit (8) to drive the CRT (10) and display an image.

[発明が解決しようとする課題] 従来のテレビ電話装置は以上のように構成されているの
で、CRTモニタ(7)に表示された送信者(2・)の
映像は、ビデオ・カメラ(1)の位置から見た像となっ
ており、日常、自分自身の像を見る手段として多用され
る鏡に映し出される像とは左右が逆になっている。この
ため、CRTモ二り(7)に表示された自分自身の像を
見ながら何らかの動作を行うことは非常に困難な作業と
なると言う問題点を存しており、このような問題点の解
消が課題である。
[Problems to be Solved by the Invention] Since the conventional videophone device is configured as described above, the image of the sender (2) displayed on the CRT monitor (7) is transmitted to the video camera (1). This is an image seen from the same position, and the left and right sides are reversed from the image reflected in a mirror, which is often used as a means of viewing one's own image. Therefore, there is a problem in that it is extremely difficult to perform any action while looking at one's own image displayed on the CRT monitor (7). is the issue.

この発明は、係る課題を解決するためになされたもので
、CRTモニタ(7)に表示される像の左右を、送信者
(2)である自分が表示される時に入れ替え、鏡に映る
姿と同様の表示をすることができるテレビ電話装置を得
ることを目的とする。
This invention was made in order to solve this problem, and it swaps the left and right sides of the image displayed on the CRT monitor (7) when you, the sender (2), are displayed, so that it is similar to the image reflected in the mirror. An object of the present invention is to obtain a video telephone device capable of displaying a similar display.

[課題を解決するための手段] この発明に係るテレビ電話装置は、ビデオ◆カメラと、
CRTモニタと、該ビデオ・カメラから出力される映像
信号を分割しその一つをビデオ出力信号として相手側に
送出する分配回路と、該分配回路と共に画像選択回路を
構成し該ビデオ・カメラの映像信号と相手側から送られ
るビデオ入力信号とを適時切り替えてCRTモニタに出
力する切替信号発生回路とを含む。そして、前記CRT
モニタは、前記画像選択回路の出力によりCRTの水・
[掃引を選択的に反転させる水平掃引反転回路を備え、
送信者自身の像をCRTモニタに表示させる際に左右を
反転させ鏡像として表示させるものである。
[Means for Solving the Problems] A videophone device according to the present invention includes a video◆camera,
A CRT monitor, a distribution circuit that divides the video signal output from the video camera and sends one of them to the other party as a video output signal, and an image selection circuit that together with the distribution circuit constitutes an image selection circuit that divides the video signal output from the video camera and sends one of them to the other party as a video output signal. It includes a switching signal generation circuit that timely switches between the signal and the video input signal sent from the other party and outputs it to the CRT monitor. And the CRT
The monitor selects the CRT water and
[Equipped with a horizontal sweep inversion circuit that selectively inverts the sweep,
When displaying the sender's own image on a CRT monitor, it is displayed as a mirror image by inverting the left and right sides.

[作用] この発明に係るテレビ電話装置は前述した手段を有する
ので、相手側が表示されるときは対向位置から見た通常
の画像を表示し、送信者自身を表示するときは、画像選
択回路の出力により水平掃引反転回路を動作させ、CR
Tの水平掃引を選択的に反転させて左右を入れ替え鏡像
として表示することができる。
[Function] Since the videophone device according to the present invention has the above-mentioned means, when the other party is displayed, a normal image seen from the opposite position is displayed, and when the sender himself is displayed, the image selection circuit is The output operates the horizontal sweep inversion circuit and CR
The horizontal sweep of T can be selectively reversed and left and right swapped to display a mirror image.

[実施例] 第1図は、この発明の一実施例であるテレビ電話装置の
映像信号部のブロック図であり、(1)はビデオ・カメ
ラ、(2)は被写体である送信者である。
[Embodiment] FIG. 1 is a block diagram of a video signal section of a video telephone device according to an embodiment of the present invention, in which (1) is a video camera and (2) is a sender as a subject.

ビデオ・カメラ(1)からの出力は分配回路(3)に接
続され、該分配回路(3)には更に、相手側より送信さ
れてくるビデオ入力信号(4)と、前記二つの人力信号
のいずれをとるかの選択を行うための切替信号を発生す
る切替信号発生回路(5)とが接続されている。分配回
路(3)の二つの分配出力のうちの一つはビデオ出力信
号(6)として通信の相手側に連結された伝送路に接続
され、他方の出力がCRTモニタ(2o)に接続されて
いる構成も前記従来例と同様である。
The output from the video camera (1) is connected to a distribution circuit (3), which also receives the video input signal (4) sent from the other party and the two human input signals. A switching signal generation circuit (5) is connected to generate a switching signal for selecting which one to use. One of the two distribution outputs of the distribution circuit (3) is connected as a video output signal (6) to a transmission line connected to the communication partner, and the other output is connected to a CRT monitor (2o). The configuration is also the same as that of the conventional example.

CRTモニタ(20)は、ビデオ信号処理回路(21)
、駆動回路(22)、水平掃引反転回路(23) 、C
RT (24)を順次電気的に接続して構成されている
The CRT monitor (20) has a video signal processing circuit (21)
, drive circuit (22), horizontal sweep inversion circuit (23), C
It is constructed by sequentially electrically connecting RTs (24).

前記水平掃引反転回路(23)には切替信号発生回路(
5)の出力が接続され、その出力によりCRTの水平掃
引を選択的に反転させることができるようになっている
The horizontal sweep inversion circuit (23) includes a switching signal generation circuit (
5) is connected so that the horizontal sweep of the CRT can be selectively reversed by the output.

次に動作について説明する。ビデオ・カメラ(1)によ
って撮影された送信者(2)の映像信号は、分配回路(
3)に送られ相手側にビデオ出力信号(6)として出力
されると共に、相手側より送られてきたビデオ人力信号
(4)とビデオ・カメラ(1)により撮像された送信者
自身の映像のいずれか一方を選択する動作が分配回路(
3)において実施され、CRTモニタ(20)に入力さ
れる。分配回路(3)における選択は、切替信号発生回
路(5)において作られた切替信号によって行われる。
Next, the operation will be explained. The video signal of the sender (2) captured by the video camera (1) is transmitted to the distribution circuit (
3) and is output as a video output signal (6) to the other party, as well as the video human input signal (4) sent from the other party and the sender's own image captured by the video camera (1). The operation of selecting one of them is the distribution circuit (
3) and input to the CRT monitor (20). Selection in the distribution circuit (3) is performed by a switching signal generated in the switching signal generating circuit (5).

CRTモニタ(20)は、人力された映像信号をビデオ
信号処理回路(21)を通じ駆動回路(22)に送る。
The CRT monitor (20) sends a manually generated video signal to a drive circuit (22) through a video signal processing circuit (21).

次いで、水平掃引反転回路(23)が、各種駆動信号の
内、水平掃引信号のみを切替信号発生回路(5)の出力
状態に応じて非反転か反転かを判別して適時反転させ、
他の信号はそのままCRT(24)に送り、CRT(2
4)を動作させる。
Next, the horizontal sweep inversion circuit (23) determines whether only the horizontal sweep signal among the various drive signals is non-inverted or inverted according to the output state of the switching signal generation circuit (5), and inverts it as appropriate.
Other signals are sent as they are to the CRT (24),
4) Operate.

第2図(A)は、通常のCRT (24)の水平掃引信
号波形を示し、第2図(B)は、反転状態における水平
掃引信号波形を示すものである。この第2図(B)に示
される掃引信号により、CRT(24)は、左右逆、す
なわち前面より見て、右より左に水平掃引されるため鏡
像が表示される。
FIG. 2(A) shows a horizontal sweep signal waveform of a normal CRT (24), and FIG. 2(B) shows a horizontal sweep signal waveform in an inverted state. Due to the sweep signal shown in FIG. 2(B), the CRT (24) is horizontally swept horizontally from right to left when viewed from the front, so that a mirror image is displayed.

[発明の効果] この発明は以上説明したとおり、前記画像選択回路の出
力によりCRTの水平掃引を選択的に反転させる水平掃
引反転回路をCRTモニタに備える構造により、相手側
が表示されるときは対向位置から見た通常の画像を表示
し、送信者自身の画像を表示するときは左右を入れ替え
鏡像として表示することができる。従って、日常的な使
用感覚で使用1■能なテレビ電話装置を実現できる。
[Effects of the Invention] As described above, the present invention has a structure in which the CRT monitor is equipped with a horizontal sweep inversion circuit that selectively inverts the horizontal sweep of the CRT using the output of the image selection circuit. A normal image viewed from the current position is displayed, and when displaying the sender's own image, the left and right sides can be swapped and displayed as a mirror image. Therefore, it is possible to realize a video telephone device that is easy to use as if it were used on a daily basis.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例に係るテレビ電話装置の映
像信号部を示すブロック図、第2図(A)、(B)は第
1図の実施例における水平掃引反転回路の動作を説明す
るための水平掃引信号波形図、第3図は従来のテレビ電
話装置の映像信号部を示すブロック図である。 図中、(1)はビデオ・カメラ、(3)は分配回路、(
4)はビデオ入力信号、(5)は切替信号発生回路、(
20)はCRTモニタ、(23)は水平掃引反転回路、
(24)はCRTである。 なお、図中、同一符号は同一、又は相当部分を示す。 第1図 (A)         (B) 第2図 第3図
FIG. 1 is a block diagram showing the video signal section of a video telephone device according to an embodiment of the present invention, and FIGS. 2(A) and 2(B) illustrate the operation of the horizontal sweep inversion circuit in the embodiment of FIG. FIG. 3 is a block diagram showing the video signal section of a conventional video telephone device. In the figure, (1) is a video camera, (3) is a distribution circuit, (
4) is a video input signal, (5) is a switching signal generation circuit, (
20) is a CRT monitor, (23) is a horizontal sweep inversion circuit,
(24) is a CRT. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Figure 1 (A) (B) Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] ビデオ・カメラと、CRTモニタと、該ビデオ・カメラ
から出力される映像信号を分割しその一つをビデオ出力
信号として相手側に送出する分配回路と、該分配回路と
共に画像選択回路を構成し該ビデオ・カメラの映像信号
と相手側から送られるビデオ入力信号とを適時切り替え
てCRTモニタに出力する切替信号発生回路とを含むテ
レビ電話装置において、前記CRTモニタは、前記画像
選択回路の出力によりCRTの水平掃引を選択的に反転
させる水平掃引反転回路を備え、送信者自身の像をCR
Tモニタに表示させる際に左右を反転させ鏡像として表
示させるようにしたことを特徴とするテレビ電話装置。
A video camera, a CRT monitor, a distribution circuit that divides the video signal output from the video camera and sends one of them to the other party as a video output signal, and together with the distribution circuit constitutes an image selection circuit. In a video telephone device including a switching signal generating circuit that timely switches between a video signal from a video camera and a video input signal sent from the other party and outputs the signal to a CRT monitor, the CRT monitor is configured to output a CRT signal from a video input signal sent from the image selection circuit. Equipped with a horizontal sweep inversion circuit that selectively inverts the horizontal sweep of the sender,
A video telephone device characterized in that when displayed on a T-monitor, the left and right sides are reversed and displayed as a mirror image.
JP12730288A 1988-05-25 1988-05-25 Video telephone set Pending JPH01296884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12730288A JPH01296884A (en) 1988-05-25 1988-05-25 Video telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12730288A JPH01296884A (en) 1988-05-25 1988-05-25 Video telephone set

Publications (1)

Publication Number Publication Date
JPH01296884A true JPH01296884A (en) 1989-11-30

Family

ID=14956592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12730288A Pending JPH01296884A (en) 1988-05-25 1988-05-25 Video telephone set

Country Status (1)

Country Link
JP (1) JPH01296884A (en)

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